inches plus coins equals metric system

7/16" - 10ct = 10mm

Fractional inches can suck my nuts.
- Decimal inches can lick my ass.
  Fractional metric can wear a skirt and give me a reach around 😍
  
  Almost afraid to ask but what’s a reach around
- Are they really that small?
- Yeah, honestly I'm usually so tired of the imperial VS metric debate (I know metric is better and I wish the US used it, it's just a low priority), but drill bit sizes are so stupid.
  "Yeah gimme that 15/64ths bit" unhinged behavior.
  
  I like inches, I like the size of 1/8th" it's suitable to my needs. I like the scale on the ruler, my eyes can instantly tell what I'm measuring because each tick is a different length. It works for me, it jives with my tools, I will not buy new rulers.
  I would happily throw out all my drill bits and switch to numbered ones or metric, I don't care. Fractions for hole size is dumb. I'll also happily throw out all my imperial sockets and wrenches and switch to one kind of nut. Having two standards of the same tool just sells more socket sets. Which was probably the point.
  If only they'd made a metre equal a yard, then everyone would be bilingual and we wouldn't have to fight. You could use the one that was appropriate for the job.
- Carful what you wish for they made my nuts suck after striping them.

11.1125 mm - 1.35 mm = 9.7625 mm
Sorry, I couldn't resist
- Now do it with a nickel
- 9-381/500mm
  Fractional metric master race 😎

Physics is also important. Coins are usually made of softer metal so a wrench can crush it if a bolt is too tight.
- I don't know... I've tried to drill holes in quarters when I couldn't find a washer. Canadian quarters are as hard as woodpecker lips.
  
  "Woodpecker lips" that is probably the most cursed way to refer to a beak that I've ever seen
  
  Since 2000, they've used all-American steel vs. our quarters, which are copper at the core. PS: I don't really know if the Canadian quarter's steel is all-American, I just like the ambiguity of the statement.
- Thank you. That's what I was thinking.

The damn imperial system and its weird 1/16 measurements. Why do you people hate 10 step counting?
- You actually can't be mad about this one. This is effectively binary which you use all the time without knowing it. And even worse, proper SI notation has jacked up binary hardcore.
  1, 1/2, 1/4, 1/8, 1/16, 1/32... You won't find a 1/12 or some other number.
  
  Maybe that's why I couldn't tell if a gigabyte has 1000 megabytes or 1024. People keep telling me one or the other. Others keep telling me that there's 1024 mebibytes in 1 gibibyte, but those names absolutely suck.
- 10 isn't the best base and I'm sick of pretending it is.
  
  Depends for what. Still better than random scales like 3, 12, 1760 and units that don't mean anything like hundredweight, which isn't even one hundred anything, unless it is because you live in another part of the world where the same word means a totally different thing.
  Fancy a pint?
  
  I would pick base 12. Which would you prefer?
  
  All the bases are 10
- Because a lot of imperial measurements revolved around being able to be divided by 4, and occasionally 3 at times.
  For instance the cooking unit of measurments are in 4's or base 2 in a way (e.g 1 gallon = 4 quarts = 8 pints = 16 cups = 128 ounces)
  We still see 4s or 3s irl regardless of measurement system. Doughnuts are often prepared in dozens and virtually never in 10s. Do we walk around claiming why bakers hate 10 step counting?
  Time is the example of something designed around 3/4 and didn't change. 60 is divisiable by both 4 (15) and 3 (20) and is not base 10, but people can accept that.
  
  Time is the example of something designed around 3/4 and didn’t change. 60 is divisiable by both 4 (15) and 3 (20) and is not base 10, but people can accept that.
  The French tried decimal time for a few years...
  https://en.m.wikipedia.org/wiki/Decimal_time
- Using 12 and 16 makes for easier maths (pre-calculators). It's easier to divide and get an integer. With easy access to calculators and highly precise measurements (especially digital systems) metric makes more sense and is easier to interpret quickly.
- 16 is a power of two. Half, quarter, eighth, sixteenth.
  The main problem is they reduce the goddamn fraction. Let me have my 8/16th wrench.
  
  Let me have my 8/16th wrench.
  If you start a new job in a garage you will absolutely be asked to go get one.
- Because shut up. That's why.
- Why do you people feel the need to be able to convert between the thickness of a human hair and the distance between cities?
  Ah yes, this bolt is .000001 kilometers wide. That’s a very useful thing you guys did. Definitely need that in every day life.
  
  Stop, you're making us Americans look even stupider.
  
  Yeah, that's why nobody does it that way, but that strawman you got there looks mighty fine...

Why *metric is important
Ten mil spanner is fuckin ten mil spanner and you have three in your toolbox and only someone who was starved of oxygen at birth uses imperial spanners wtf is this 🥲
- Car manufacturers in the US like to throw metric and SAE at you. Just to keep you on your toes I guess. Ironically, it's always the wrench you DIDN'T bring with you.
- Whitworth is for real men
  
  Yeah, like fuckin Isombard Kingdom Brunel it's not 1870 😅

10mm is also .40'.
...Which I know because 10mm auto is the parent cartridge of .40S&W, which was just cut down to be shorter, but still uses the same projectiles.
- I expect you mean .40 inches but you have abbreviated .40 feet which is more like 61/500m
- Can I be that person???
  AkShUaLlY An inch is not PrEcIsElY 2.5 cm but is /defined/ to be 2.54 ish cm so 0.4” is in ReAlItY 10.6 mm.
  Ok im sorry. I’ll show myself out.
  
  I believe the modern definition of the inch is precisely 25.4mm. Which makes all the Freedom units also metric.
  
  6% off is fine with me t. engineer
- I know this cause guns. How imperial of you.
- .40 short & wimpy

No one going to mention that it's a Philips head screw as well? So not only could they have used a metric wrench but also a screwdriver.
- You're thinking in ¢.02 now.
- As the owner of an older Japanese motorcycle: you're better off with a wrench.
  You're probably just going to strip it with a screw driver, and that's assuming it's actually Philips and not JIS.
- Hexagon socket screws are often used because they are easier to loosen when the screws are very tight. I think in such a case you can't get any further with a Phillips screwdriver.

This meme is old as hell
- sir, this is lemmy shitpost
  
  That meme is old as hell

Maths is important to get what the frick a 7/16 inch unit is supposed to be and how to calculate just about anything with it.
- Maths may be important, but figuring out what's bigger, 7/16 vs 3/8, is a stupid fucking system when metric exists.
  Centimeters/millimeters: "6 is bigger than 5 is bigger than 4"
  Inches: "I don't fuckin know what's bigger, 5/16 or 3/8? How about 7/32? Fuck you, I'm just making it all up."
  
  Even more ridiculous is that they could have just made everything one fraction. Like 1/10 then 2/10 then 3/10. This crap is over complicated by it's own rules.
  
  What's that in hogs hair lengths?
  
  3/8 is 6/16. 7/16 is bigger. That's like 3rd grade math.
  
  how would not know what bigger
- Theres 2 pretty good reasons why I only ever have 1 fractional wrench at a time. One so I can just move up the line until one fits and the other reason is that fractional is not used in modern cars. I only ever need to break my imperial set out when I'm working on a antique car.

Any aerospace mechanics have any comments on this matter?
- Certified aircraft repairman here: That's not an aviation bolt, so the correct tool to turn it is a pair of vice grips and a hammer.
- I'm not an aerospace mechanic, but I do have some insight.
  The formula in the image is incorrect. It depicts 7/16" - 10 cents = 10 mm, not plus. Notice that 7/16" indicates the gap in the wrench, and the dime makes that gap smaller.
  Now that that is out of the way, it seems that a dime is 1.35 mm (I love that American currency is specified in metric). So, 7/16" - 10 cents = 9.7625 mm. So, pretty damn close to 10 mm.

Wait... 20h old and nobody picked up un the fact that the thing on the picture is actually screw and you'd need a screwdriver for that?
- It has a hex shape, you can use both.
  
  I would say the Philips is for driving in, for speed of assembly, the hex is for when it's seized and needs force to remove.
- Like I'm going two weld two dimes into a cross for the screw slot when I have a wrench already.
- A hex cap screw

Laughs in pliers wrench

- This is duck typing though. Since it works like a 10mm wrench.
  The only problem is that now both the dime and 7/16 likely to vanish when next needed.